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Isuzu
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2003
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Axiom Base, 4WD
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls - Self-Diagnostics
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Diagnostic Tests
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DTC P0448: Evaporative Emissions System - Vent Control Circuit Open
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Conditions For Setting DTC
Conditions For Setting DTC
Ignition is ON.
Engine is running for over 5 seconds.
System voltage is above 11 volts.
Read the feedback signal from the Output Drivers Module (ODM) to processor is high for 20 test failures within 28 test samples.